The Warring States Period was a chaotic time, and the world was in purgatory.
When their loved ones were taken away and their homes were destroyed, the two teenagers chose to become ghosts.
Wearing the mask is Shura, taking off the disguise is the soul of the dead.
In this world where people cannibalize people, only those who are more ferocious than evil spirits can fight their way out.
This background is fictional history, please do not take it seriously.
